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(Fixed) Error: Couldn't switch to requested res

"Error: Couldn't switch to requested monitor resolution" I have over 200 hours logged into this game on Steam and I have never had any problems so far until now. This is the first error I have gotten and I have no idea how to fix it. I've tried actually changing the resolution to something lower and I still get the error. I've uninstalled and reinstalled yet still there. I'm running out of idea to do before I just drop the game sadly.